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compass-mcp MCP Server

Compass real-estate for Claude — search, property details, photos, price history, compare

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Published as compass-mcp on npm. Runs locally.

Known issues

35 problems reported by people outside the maintainer team. Issues filed by the project's own owners, members and collaborators are excluded — those are release checklists and internal refactors, not things that will go wrong for you. Showing 12.

Most discussed

Cohort: resolve via structured address fields (address/city/state/zip) against the typeahead API, not free-text ?q= SSR

Round-4 directive (cohort-wide)

All five realty MCPs should resolve addresses using structured fields (address, city, state, zip) against the portal's typeahead/autocomplete API — not by flattening to a free-text ?q=<blob> string against an SSR page.

Why (this is also the fix for the coverage false-negatives)

Compass #78 and homes #55 are silent false-negatives for listings the portals do have. Investigation this session:

  • compass.com's SSR free-text paths (/search/?q=…, `/h

Read the thread · 2026-05-28 · closed · 1 comment

feat(by-address): add price-band-bounded search-fallback rung

Context

Round 3 cross-MCP feedback proved that zillow's price_min/price_max is "frequently load-bearing" on zillow_get_by_address — many rural / remapped-locality addresses resolve ONLY via the price-band-bounded search-fallback rung. Same feedback flagged compass as also lacking price-band.

Investigation in /tmp/compass-priceband (branch feat/priceband-investigate) concluded this is NOT a low-effort change for compass and is filed as its own design issue rather than shipped s

Read the thread · 2026-05-28 · closed · 1 comment

raise compass_compare_properties cap from 8 → 25, or add bulk endpoint

From the real-world cross-MCP report (P2 #26).

Motivation

Today's 53-listing session needed many sequential round trips through compare_properties (max 8 per call). Raising the cap or adding a bulk endpoint cuts that to 2-3.

Two options

A. Raise compass_compare_properties cap from 8 to 25. Lower-effort. Same tool surface; same concurrent fan-out shape as today.

B. Add compass_bulk_get (covered by the bulk_get issue). A real bulk endpoint that returns structured records ONL

Read the thread · 2026-05-27 · closed · 1 comment

surface listing_agent_history (other listings by the same agent)

From the real-world cross-MCP report (P2 #25).

Motivation

Compass is positioned as the agent-rich source of the five MCPs — lean into that. Useful for assessing a realtor's track record before a showing, spotting bulk listers, or identifying the dominant agent in a micro-market.

Change

Add listing_agent_history to property records (or a dedicated compass_get_agent_history(agent_id) tool):

listing_agent_history: {
  agent_id,
  agent_name,
  active_listings_count,
  recentl

[Read the thread](https://github.com/chrischall/compass-mcp/issues/52) · 2026-05-27 · closed · 1 comment

### tool description honesty sweep (especially compass_get_by_address silent-wrong-match)

From the real-world cross-MCP report (P2 #23).

## Motivation

Many tool descriptions oversell or omit critical caveats. Real examples from today:

- **`compass_get_by_address` doesn't mention the silent-wrong-match bug** (see the CRITICAL bug issue) — this is the highest-priority description fix until the underlying bug ships, because any caller trusting the current description gets silently corrupted data.
- `compass_search_properties` may have an undocumented result cap (see the search-cap au

[Read the thread](https://github.com/chrischall/compass-mcp/issues/51) · 2026-05-27 · closed · 1 comment

### Most recent

### P1-3: compass_search_properties pagination cursor does not advance (offset ignored; only first ~41 reachable)

## Summary

`compass_search_properties` reports e.g. `total_items: 104` and returns `next_offset: 40`, but calling again with `offset: 40` returns the **identical first batch**. The SSR `search_path` shows `page-9` yet the payload is page 1, so only the first batch of results is ever reachable.

## Investigation (live, via the bridge)

- Real SSR page size is `num: 41` (from `initialResults.rawLolSearchQuery`), **not 5** — the `COMPASS_PAGE_SIZE = 5` constant in `src/tools/search.ts` is wrong. W

[Read the thread](https://github.com/chrischall/compass-mcp/issues/87) · 2026-05-29 · closed · 0 comments

### P1-2: add compass_search_properties fallback rung to the address resolver (typeahead timeout/empty)

## Summary

When the structured typeahead rung times out or returns empty, the resolver should fall back to a `compass_search_properties`-style locality search with a whole-token street match as a **first-class resolver rung** — search has far better recall than typeahead.

## Rationale

The typeahead (`/api/v3/omnisuggest/autocomplete`) is the primary rung (#78/#79), but on a cold bridge it times out, and even when healthy it can miss rural/locality listings. `compass_search_properties` walks t

[Read the thread](https://github.com/chrischall/compass-mcp/issues/86) · 2026-05-29 · closed · 0 comments

### P0-2: compass_resolve_addresses misclassifies transport timeout as resolved:false (false 'no listing found')

## Summary

`compass_resolve_addresses` returns `resolved: false` when a cold-bridge typeahead round-trip times out at the transport layer. That outcome is **indistinguishable from a genuine no-match**, so a caller cannot tell "Compass has no listing here" apart from "the bridge timed out before it could ask."

## Impact

A 60-address resolve workflow produced a false conclusion that "Compass covers only 4/60" for a Lake Lure, NC batch. A subsequent `compass_search_properties` call proved 40+ La

[Read the thread](https://github.com/chrischall/compass-mcp/issues/85) · 2026-05-29 · closed · 0 comments

### P0: by-address returns false-negative for listings Compass actually has (silent under-report)

## Round-4 field report — NEW P0 (silent under-report)

`compass_get_by_address` returns `{ resolved: false, error: "no listing matched the address" }` for listings that Compass **does** have, Active, indexed, in a market Compass serves. This is the inverse of the #45 silent-wrong-match bug — and the same dangerous failure class: a downstream tracker treats "Compass doesn't have it" as truth and drops a real listing.

## Reproduced end-to-end this session
Both return `resolved: false` from the M

[Read the thread](https://github.com/chrischall/compass-mcp/issues/78) · 2026-05-28 · closed · 0 comments

### set keepAliveIntervalMs: 25_000 in FetchproxyServer constructor (fetchproxy#71)

## Parent issue

[fetchproxy#71](https://github.com/chrischall/fetchproxy/issues/71) — cohort follow-up to opt Pattern A MCPs into proactive keep-alive (0.9.0 wave).

## The change

In `src/transport-fetchproxy.ts` (or equivalent), add `keepAliveIntervalMs: 25_000` to the `FetchproxyServer` constructor options:

```ts
const transport = new FetchproxyServer({
  serverName: 'compass-mcp',
  // ... existing options
  keepAliveIntervalMs: 25_000,  // Round-3 #67 — proactive SW resident-keeping
});
`

[Read the thread](https://github.com/chrischall/compass-mcp/issues/75) · 2026-05-28 · closed · 0 comments

### add search-fallback rung to compass_get_by_address (round-3 architectural gap)

## Architectural gap

Round-3 zillow corpus made the case: a real-world set of 20 mountain MLS addresses resolved 0/20 via zillow's direct-resolver rung but 17/20 via the price-band-bounded search-fallback rung. **The search-fallback rung was load-bearing**, not the price band per se.

`compass_get_by_address` today runs **one rung**: a single `/homes-for-sale/?q=<freetext>` SSR fetch with `addressMatchesQuery` verify. When the free-text search returns no match — the failure mode rural/locality-

[Read the thread](https://github.com/chrischall/compass-mcp/issues/71) · 2026-05-28 · closed · 0 comments

### bulk resolver should run the same fallback rungs as single-call (parity audit)

Round 3 feedback exposed that `zillow_resolve_addresses` was running only the direct-resolver rung while `zillow_get_by_address` had grown a 3-rung strategy (direct → suffix-expansion → search-fallback). Real example: 20 addresses → 0 resolved via bulk, 17 resolved when looped through the single call. Filed as `chrischall/zillow-mcp#<TBD>`.

**This issue is the parity audit for `compass_resolve_addresses` against `compass_get_by_address`.** Confirm or fix:
1. Does the bulk resolver run *exactly*

[Read the thread](https://github.com/chrischall/compass-mcp/issues/67) · 2026-05-28 · closed · 0 comments

[See all 18 reports Pod holds for compass-mcp](/mcp/compass-mcp/issues) — of 35 qualified upstream.

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